問題詳情
3. 六個數由小排到大，已知六數之平均數為 25，若前二數之平均數為 12，後二數之平均數為 35，則中位數為何？
(A) 28
(B) 29
(C) 30
(D) 31
(A) 28
(B) 29
(C) 30
(D) 31
參考答案
無參考答案
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